Duplicator.



Patented May 23,1916.

2 SHEETS-SHEET 1.

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H. H. GOWER.

DUPLICATOR.

APPLICATION l-lLED MAY 24. M313.

1 ,1 @%,639. Patented May 23, 1916.

2 SHEETS-SHEIIET 2.

THE COLUMBIA PLANOBRAPH cm, WASHINGTON. D c.

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DUPLIGATOR.

Specification of Letters Patent.

Patented May 23, 1916.

Application filed May 24, 1913 Serial No. 769,672.

To all whom it may concern Be it known that I, HERBERT H. Gownn, a subject of the King of Great Britain, residing at Elgin, in the county of YVabash-a and State of Minnesota, have invented new and useful Improvements in Duplicators, of which the following is a specification.

An object of the invention is to provide the duplicator with stencil clamping bars pivotally connected with the duplicator in such a manner as to enable the bars when not in stencil clamping position, to be moved laterally about their pivot and positioned upon the duplicator body beneath the lid connected therewith.

The invention embodies, among other features, a device of compact form which does not involve a chemical action, but is purely mechanical and can be readily operated for the purpose of duplicating copies or representations on paper or other suitable material.

In the further disclosure of the invention reference is to be had to the accompanying drawings, constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which:

Figure 1 is a perspective view of my device, showing the platform in lowered position to receive a piece of paper upon which a duplicate copy is to be made Fig. 2 is a vertical longitudinal sectional view of the device disclosed in Fig. 1; Fig. 3 is a vertical transverse sectional view taken through the center of the box; Fig. 41 is a vertical transverse sectional view taken through one of the securing members; Fig. 5 is a perspective View of the writing board showing the roughened plate thereon; and Fig. 6 is a perspective view of the stylus used in connection with my device.

Referring more particularly to the views, I disclose a duplicator 10 consisting of a box 11 provided with a suitable lid 12, the said box having an opening 13 in the front side thereof, and the said opening normally closed by a hinge member 14 which, when in closed position, constitutes a portion of the front side of the box 11.

A plurality of shelves 15 are provided within the box 11 at the ends thereof and a platform 16 normally reposes on the shelves 15 and is adapted to normally be suspended thereon, it eing readily appfl ifilll th 9 platform 16, being smaller than the box 11, can be easily removed therefrom.

A handle 17 is carried on the hinge member 1 1 for the purpose of swinging the same lnto open or closed position and on the inner face of the hinge member there is provided a cam-like lug 18, so arranged that when thehinge member 1 1 is moved into closed position to form a portion of the front of the box, the lug 18 will engage an edge of the platform 16 and move the same upwardly within the box. Inasmuch as the lug 18 will impart a swinging action to the platform 16 rather than a lifting action of the entire platform, the shelves 15 are preferably inclined so that the edge of the platform opposite to the edge engaged by the lug will constitute a hinge or fulcrum upon which the platform will swing Auxiliary shelves 19 formed with or superimposed with respect to the shelves 15 are provided in the box 11 and the transverse edges of a preferably tough, greaseproof paper 20 are adapted to repose upon the auxiliary shelves 19 to normally support the greaseproof paper 20 in spaced relation to the platform 16.

In order to secure the grease proof paper in position in the box, securing bars 21 are provided and each bar pivotally connected with a shelf 19 by means of a staple 21 loosely passing through an eye 21 in one end of the bar and secured in the shelf 19 adjacent the hinge connection of the lid 12 with the box. The bars 21 when securing the transverse edges of the grease proof paper on the auxiliary shelf 19 extend across the box over and above said shelf with the free ends of the bars projecting beyond the front sides of the box for engagement with suitable hooks 22 mounted to swing on the front side of the box, thus binding the grease proof paper 20 in a position for duplicating.

A writing board 23 has mounted thereon a pad 24:, preferably formed of metal and roughened, the said pad being adapted to initially have the greaseproof paper 20 placed thereon, after which a stylus 25 is used in the same manner as a pencil or pen upon the greaseproof paper 20 in order to inscribe thereon the particular representations or writings which it is desired to duplicate, it being readily seen that when the stylus is operated. over the g ea ep of paper 20, the said paper will be subjected to a between. 20

somewhat cutting action on account of the roughness of the pad 24 so as to form a stencil. This stencil is now arranged in the box 11 in the manner mentioned heretofore and after the stencil, known heretofore as the greaseproof paper 20 and which, in fact, it is, has been positioned on the box and se cured therein by the bars 21, a sheet of copy paper upon which it is desired to duplicate the representations on the stencil, is placed between the stencil and the platform 16, the

said platform having been'previously low-v ered by swinging-the hinge member let into open position so as to disengage the lug 18 from the platform, thus providing a sufiicient space between the platform and stencil to permit of inserting the copy paper there- The hinge member 14 is now swung into closed position, thus causing the lug 18 to'engage the platform and raise the same so that the copy paper will be securely held between the platform and stencil and immediately beneath the stencil. An ink roller of the ordinary kind used by printers, and previously properly inked with suitable printers ink or'the like, is now rolled over the surface of the stencil, and it will be readily apparent that the ink on the roller, when the roller isoperated over the stencil, will pass through the indentations of the paper 20 and which constitute the stencil, to duplicate the reproduction on-the stencil, on the copy paper inserted between theplatform and the stencil, the reproduction on the copy paper being an exact ink facsimile of the representation on the stencil. The

made. When suflicient copies have been produced the hooks 22 may be disengaged from the projecting ends of the bars 21 and the bars moved laterally about the staples 21 to. a position upon the body of the duplicator which will enable the bars to be inclosed therein when the lid 12 is closed.

From the foregoing description it will be seen that a device of the character described can be operated by an amateur or person unskilled in the art of copying or duplicating; that the operation of the device involves no chemical processes or chemical proof-paper and that the entire device is compact and complete and can be manufactured at a small cost to produce the desired result.

Having thus described my invention, I claim:

In a duplicator having a lid, means for clamping a stencil thereto including bars disposed upon the duplicator in spaced relation and having one end thereof projecting beyond the same, said bars each having an eye in the end distant from the projecting end, a staple loosely passing through the eye in each bar and secured in the duplicator whereby the bars may be moved laterally about the staples to enable the projecting ends of the bars to be positioned upon the body' of the duplicator, and beneath the lid, and means for holding said bars in clamping position engageable with the extending ends thereof.

In testimony whereof I aflix my signature in presence of two witnesses.

HERBERT H. GOVVER. Witnesses JOHN l/VALSH, EDITH SAWYER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. O. 

